Quarterly report pursuant to Section 13 or 15(d)

Business and Credit Concentrations - Additional Information (Detail)

v3.20.1
Business and Credit Concentrations - Additional Information (Detail)
$ in Millions
3 Months Ended
Mar. 31, 2020
USD ($)
Customer
Mar. 31, 2019
USD ($)
Customer
Dec. 31, 2019
USD ($)
Concentration Risk [Line Items]      
Credit losses attributable to write-offs $ 1.5 $ 2.2  
Sales [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Number of largest customers | Customer 5 5  
Percentage of concentration risk 11.40% 10.70%  
Domestic [Member]      
Concentration Risk [Line Items]      
Accounts receivable $ 309.9   $ 228.5
Non-US [Member]      
Concentration Risk [Line Items]      
Accounts receivable 514.1   440.9
Net total assets held outside the United States $ 2,671.3   $ 2,643.8